JPH0141292Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a spring bar for a band such as a watch band.

BACKGROUND TECHNOLOGY As shown in FIG. 1, a conventional spring bar for a watch band has a cylindrical shape, in which a cylindrical body 1 has a cylindrical body 1 which is open at both ends, and constricted portions with reduced diameters are formed at both ends 1a and 1b of the cylindrical body 1. Inside the body 1 are both ends 1a and 1b.
Sliders 2a and 2b are movably provided near each other, and both ends 1 of the cylindrical body 1 are attached to the sliders 2a and 2b.
Protrusions 3a and 3b protruding from a and 1b are respectively provided integrally, and the protrusions 3a and 3b have two annular protrusions 3'a, 3'a and an annular protrusions 3'b, 3'b.
are formed respectively, and the slider 2a inside the cylindrical body 1
A spring 4 is provided between the slider 2b and the slider 2b to constantly bias the sliders 2a and 2b toward both ends 1a and 1b, respectively.
was set up.

To attach this spring bar to the mounting rod of the watch, insert the protrusion 3a of one slider 2a protruding from one end 1a of the cylindrical body 1 into the hole 6a of one of the mounting rods 5a of the watch. Between two annular protrusions 3'b, 3'b formed on the protrusion 3b of the other slider 2b protruding from the other end 1b of the cylindrical body 1, a bifurcated piece, needle, claw, etc. Engage the small pieces and use the small pieces to slide the slider 2b.
is pushed back against the biasing force of the spring 4, and the protrusion 3b is retracted into the cylindrical body 1 and fitted into the other mounting rod 5b of the watch, and then the hole 6b of the mounting rod 5b and the slider 2
When the protrusion 3b is released from the locking of the protrusion 3b by the small piece at the position where the protrusion 3b of b is opposed to the protrusion 3b, the slider 2b moves toward the other end 1b of the cylindrical body 1 due to the biasing force of the spring 4, and slides. The protrusion 3b of the child 2b is the other end 1 of the cylindrical body 1.
protrudes from b and is inserted into hole 6b of mounting rod 5b,
The protrusions 3a and 3b of the sliders 2a and 2b that protrude from both ends 1a and 1b of the cylindrical body 1 are the mounting rods 5 of the watch.
The spring bars were fitted into holes 6a and 6b in holes 6a and 5b, respectively, and were attached between the mounting rods 5a and 5b of the clock.

However, this spring bar uses small pieces to draw the protrusions of the slider that protrude from both ends of the cylindrical body into the cylindrical body, so the small pieces are required and it is difficult to engage with the protrusions. However, since the protrusion of the slider is retracted into the cylindrical body by a small piece and locked, it is troublesome to attach the spring bar to the mounting rod of the watch, and the diameter of both ends of the cylindrical body is In order to squeeze, it is necessary to insert the slider and spring into the cylindrical body in advance, and then squeeze both ends of the cylindrical body, which is a complex and difficult manufacturing process. Since the length between the two is always constant, it was not possible to adjust the distance between the fixed parts to match the distance between the mounting rods of the clock.

In addition, a long hole is provided in the longitudinal direction, and movement prevention parts are provided at both ends of the cylindrical body with both ends open, and both ends of the cylindrical body are locked by the movement prevention parts inside the cylindrical body near both ends. A spring rod is provided in which sliders each having a protrusion protruding from the cylindrical body are movably provided, and an elastic body is provided between the sliders inside the cylindrical body to constantly bias the sliders toward both ends. It is known as Publication No. 55-1446.

However, in this case as well, since the diameter of both ends of the cylindrical body is narrowed to form a movement prevention part, it is necessary to insert the slider and the elastic body into the cylindrical body in advance and then narrow both ends of the cylindrical body. However, the manufacturing process is complicated and difficult, and the length of both ends of the fixed part of the cylindrical body is always constant, so the distance of the cylindrical body must be adjusted to match the distance between the mounting rods of the watch. I can't do it,
If the distance the slider moves is increased, the thin protrusion becomes longer and weaker, so prepare a number of spring bars with different distances between the ends of the cylindrical body depending on the distance between the mounting rods of the watch. The need arose.

Furthermore, slits are provided in the longitudinal direction of the cylindrical body with both ends open, and sliders having protrusions protruding from both ends of the cylindrical body are movably provided inside the cylindrical body near both ends. A spring bar for a wrist watch band was developed in 1975, in which a knob was formed on the mover to protrude from the slit, and an elastic body was provided between the sliders inside the cylindrical body to constantly bias the sliders toward both ends.
It is known as Publication No.-34707.

However, in this case, end caps are provided at both ends of the cylindrical body to lock the slider, so a bulge is formed on the outside of the cylindrical body and the spring bar becomes thick.
As a result, the mounting hole of the band becomes large, which spoils the appearance.The length of the cylindrical body with the end cap that serves as the fixed part is always constant, so the length of the fixed part is determined by the length of the watch's mounting rod. I couldn't adjust it to suit the distance between them.

Problems to be Solved by the Invention The purpose of the invention is to solve the above-mentioned drawbacks and to make the protrusion of the slider protruding from the end of the cylindrical body into a cylindrical shape without the need for special pieces or techniques. It can be easily retracted into the body, making it easy to attach and detach the watch to the mounting rod, and the manufacturing process is not complicated.There is no bulge on the outside of the cylindrical body, and the length of the fixed part can be adjusted to fit the watch. To provide a spring bar for a band that can be adjusted over a large distance without weakening the whole body by making a cylindrical pin protrude from a cylindrical body in accordance with the distance between the mounting rods of the band.

Means for Solving the Problems The spring bar of the band of the present invention has a cylindrical body that is open at both ends and has a slit that is open at one end in the longitudinal direction. A first slider is movably provided in the cylindrical pin and has a protrusion protruding from one end of the cylindrical body, and is fixed by friction with the body, and , a knob is formed that is locked by the cylindrical pin and protrudes from the slit, a movement preventing portion is provided at the other end of the cylindrical body, and a knob is provided inside the cylindrical body near the other end; A second slider having a protrusion protruding from the other end is movably provided, and the first slider is provided between the first slider and the second slider inside the cylindrical body. It has a structure characterized by providing an elastic body that always biases the slider toward one end and simultaneously biases the second slider toward the other end.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In FIGS. 2 and 3, 7 is a cylindrical body that is open at both ends, and slits 8 are provided at both ends along the entire length of the cylindrical body 7 in the longitudinal direction.
The cylindrical body 7 has a C-shaped cross-sectional shape, and one end 7a of the cylindrical body 7 is not formed with a constriction part that narrows its diameter, and the other end 7b of the cylindrical body 7 is A constriction part is provided that narrows the diameter and serves as a movement prevention part.

A spring pin 9, which is a cylindrical pin, is fitted and fixed inside near one end of the cylindrical body 7 by friction with the cylindrical body 7. An L-shaped slider 11 serving as a first slider having a protrusion 13 is movably provided, and a knob 12 protruding from the slit 8 of the cylindrical body 7 is provided at the upper end of the L-shaped slider 11. The L-shaped slider 11 is locked by the inner end of the spring pin 9, and the outer diameter of the L-shaped slider 11 is smaller than the inner diameter of the spring pin 9. passes through the spring pin 9 to the cylindrical body 7
It protrudes from one end 7a.

As shown in FIG. 4, the spring pin 9 has a short cylindrical shape and is provided with a slit 10 in its longitudinal direction.Since the outer diameter of the slit 10 is slightly larger than the inner diameter of the cylindrical body 7, the spring pin 9 is tightly closed due to the elastic force between the two. It is fitted into the cylindrical body 7 and fixed by friction with the cylindrical body 7.

A second slider 14 having protrusions 15 protruding from the other end 7b of the cylindrical body 7 is movably provided inside the cylindrical body 7 near the other end. The cylindrical body 7 is locked by a constriction portion, which is a movement prevention portion, provided at the other end 7b.

A spring 16, which is an elastic body, is provided between the L-shaped slider 11 and the second slider 14 inside the cylindrical body 7, and the L-shaped slider 11 is moved by the spring 16 to the cylindrical body 7.
is constantly biased in the direction of one end 7a of the second
The slider 14 is always urged toward the other end 7b of the cylindrical body 7 by a spring 16.

To assemble this spring bar, one end 7a of the cylindrical body 7 is assembled.
After inserting the second slider 14, the spring 16 is inserted into the cylindrical body 7, and then the L-shaped slider 11 is inserted.
Insert the L-shaped slider 11 into the cylindrical body 7 so that the knob 12 protrudes from the slit 8 of the cylindrical body 7, and finally insert the spring pin 9 inside the cylindrical body 7 near one end. This is done by fitting and fixing them by friction with the cylindrical body 7.

Further, a small hole 19 is provided on the back side of the rod base portion 18 of the watch band 17, and the knob 12 of the L-shaped slider 11 protrudes from the small hole 19 of the rod base portion 18, and the cylindrical body 7 of the spring bar is inserted into the watchband 17 from the open side of the rod base 18.

The spring bar watch mounting rod 5a of this first embodiment,
5b, first, the protrusion 15 of the second slider 14 protruding from the other end 7b of the cylindrical body 7 is attached.
into the hole 6a of one mounting rod 5a of the watch, and then insert the rod base of the watch band 17 formed into the L-shaped slider 11 movably provided inside the spring pin 9 near one end of the cylindrical body 7. Holding the knob 12 protruding from the small hole 19 of the portion 18 with your fingers, press the L-shaped slider 1.
1 of the L-shaped slider 11 is moved along the slit 8 of the cylindrical body 7 against the biasing force of the spring 16, and the protrusion 1 of the L-shaped slider 11 protrudes from the one end 7a of the cylindrical body 7.
3 can be drawn into the cylindrical body 7. Next, with the projection 13 of the L-shaped slider 11 retracted into the cylindrical body 7, one end 7a of the cylindrical body 7 is attached to the other mounting rod 5b of the watch.
When the protrusion 13 of the L-shaped slider 11 and the hole 6b of the mounting rod 5b are positioned opposite each other, release your finger from the knob 12 of the L-shaped slider 11 and remove the L-shaped slider 11. 11, the L-shaped slider 11 moves toward one end 7a of the cylindrical body 7 due to the biasing force of the spring 16, and the protrusion 13 of the L-shaped slider 11 moves toward the cylindrical body. The protrusion 15 of the second slider 14 is inserted into the hole 6a of the mounting rod 5a of the watch, and the protrusion 15 of the second slider 14 is inserted into the hole 6a of the mounting rod 5a of the watch. Attach the protrusion 13 to the rod 5b
The cylindrical body 7 is fitted into the hole 6b of the watch mounting rod 5.
It is installed between a and 5b.

In addition, when the distance between the mounting rods 5a and 5b of the watch is wide, the cylindrical body 7 and the spring pin 9 receive spring force from each other in the radial direction and are fixed at any position, so insert the small piece through the slit 8. By moving the spring pin 9, one end 7a of the cylindrical body 7
By not aligning the ends of the spring pins 9 and 9 at the same position, but by appropriately protruding the spring pins 9 from the one end 7a of the cylindrical body 7, as shown in FIG. The distance between the tip of the protrusion 13 and the tip of the protrusion 15 of the second slider 14 is adjusted widely.

FIG. 5 shows a sectional view of the second embodiment of the present invention,
A slit 21 is provided in the longitudinal direction of the cylindrical body 20, which is open at both ends, and a slit 21 with a reduced diameter is provided at one end 20a and the other end 20b of the cylindrical body 20. Similarly to the embodiment shown in FIG. 2, a spring pin 9 is fitted and fixed inside the tubular body 20 near one end by friction with the tubular body 20. A protrusion 13 protruding from one end 20a of the cylindrical body 20
An L-shaped slider 11 is movably provided, and a knob 12 protruding from the slit 21 is integrally formed at the upper end of the L-shaped slider 11.

A second spring pin 22 serving as a movement prevention portion is fitted and fixed inside the cylindrical body 20 near the other end by friction with the cylindrical body 20. A pin 23 serving as a second slider having a protrusion 25 protruding from the other end 20b of the pin 20
is movably provided, the outer diameter of the pin 23 is made smaller than the inner diameter of the second spring pin 22, and the protrusion 25 of the pin 23 passes through the second spring pin 22 to the other end 20b of the cylindrical body 20. A head 24 is formed at the inner end of the pin 23 and has a diameter larger than the inner diameter of the second spring pin 22 and smaller than the inner diameter of the cylindrical body 20. It is locked by the inner end of the pin 22.

L-shaped slider 11 and pin 23 inside the cylindrical body 20
A spring 16 is provided between the L-shaped slider 11 to constantly bias the L-shaped slider 11 toward the one end 20a of the cylindrical body 20, and at the same time always bias the pin 23 toward the other end 20b of the cylindrical body 20. ing.

The assembly of this spring bar is performed at the other end 2 of the cylindrical body 20.
A second spring pin 2 is located inside near the other end from 0b.
2 are fitted and fixed by friction with the cylindrical body 20, then the pin 23 is inserted from one end 20a of the cylindrical body 20, the spring 16 is inserted into the cylindrical body 20, and then the L-shaped slide The knob 12 of the mover 11 is the cylindrical body 2
The L-shaped slider 11 is inserted into the cylindrical body 20 so as to protrude from the slit 21 of the cylindrical body 7. Finally, the spring pin 9 is inserted into the cylindrical body 20 near one end. This is done by fitting and fixing by friction.

The spring bar watch mounting rod 5a of this second embodiment,
5b, first insert the protrusion 25 of the pin 23 protruding from the other end 20b of the cylindrical body 20 into the hole 6a of one of the mounting rods 5a of the watch, and then insert the pin 23 as shown in FIG. Since it is carried out in the same manner as in the embodiment, the explanation will be omitted.

Furthermore, the distance between the mounting rods 5a and 5b of the watch is
It varies depending on the manufacturer, and there are many types in 0.5 mm increments from 5 mm to 24 mm, so it was necessary to prepare a spring bar with a corresponding length, but in the case of this invention, if this interval is wide. has a cylindrical body 2
0 and the end of the spring pin 9 and the other end 20b of the cylindrical body 20 and the end of the second spring pin 22 are not aligned at the same position.
By appropriately protruding the spring pin 9 and the second spring pin 22 from the one end 20a and the other end 20b, the protrusion 13 of the L-shaped slider 11 is
The distance between the tip of the pin 23 and the tip of the protrusion 25 of the pin 23 is adjusted widely.

Note that even if a short pipe of the same shape without a slit is used in place of the spring pin serving as the movement prevention part, the crimping and fixing can be performed by the elastic force of the cylindrical body provided with the slit. Also, if a spring pin or pipe is used as a movement prevention part,
In addition to simply press-fitting the movement prevention part into the cylindrical body, if the movement prevention part is fixed integrally to the cylindrical body by gluing, welding, or brazing at the final stage after the distance adjustment, a C-shaped It is also possible to increase the bending strength of the cross-sectional cylindrical body.

Effects of the Invention As described above, according to the spring bar of the band of the present invention, the knob protrudes from the slit that is opened at one end in the longitudinal direction of the cylindrical body formed in the first slider. Move the first slider movably inside the cylindrical pin inside the cylindrical body by moving it along the slit with your finger and fixing it inside the cylindrical body near one end by friction with the cylindrical body. By moving against the elastic body provided between the first slider and the second slider, the cylindrical body protrudes from one end without requiring any special pieces or techniques. The protrusions of the first slider can be easily retracted into one end of the cylindrical body whose both ends are open, and the cylindrical body can be easily attached to and detached from the mounting rod of the watch. After inserting the second slider, the elastic body, and the first slider in this order from one end of the cylindrical body provided with a movement prevention part, a cylindrical pin is inserted inside the cylindrical body near the one end. The manufacturing process is not complicated as it only needs to be fixed.

In addition, since the cylindrical pin is fixed inside the cylindrical body near one end by friction with the cylindrical body, even after the spring bar is assembled, the cylindrical pin can be moved by inserting a small piece through the slit and moving the cylindrical pin. It can be fixed by protruding from the cylindrical body, and the distance between the end of the cylindrical pin and the end of the cylindrical body can be adjusted to match the distance between the mounting rod of the watch without weakening the entire body. Therefore, no bulge is formed on the outside of the cylindrical body.

Furthermore, an elastic body provided between the first slider and the second slider inside the cylindrical body constantly urges the first slider in the direction of one end, and at the same time pushes the second slider. Since the slider is constantly biased toward the other end, even if the hole in the mounting rod of the watch is shallow, the second slider can press the elastic body and escape into the cylindrical body. If the length is such that it can be inserted between the mounting rods of the watch, the band can be attached to the watch.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a spring bar of a conventional band, FIG. 2 is a sectional view of a spring bar of a band according to the first embodiment of the present invention, FIG. 3 is a perspective view of FIG. 2, and FIG. The diagram is
The front view of the spring pin, FIG. 5, is a sectional view of the spring bar of the band according to the second embodiment of the present invention. 1... Cylindrical body, 1a, 1b... End portion, 2a, 2
b...Slider, 3a, 3b...Protrusion, 3'a,
3'b... annular projection, 4... spring, 5a, 5b...
...Mounting rod, 6a, 6b...Hole, 7...Cylindrical body, 7
a...One end, 7b...Other end, 8...Slit, 9...Spring pin, 10...Slit,
11...L-shaped slider, 12...knob, 13...
...Standard, 14...Second slider, 15...Standard,
16... Spring, 17... Watch band, 18... Rod base, 19... Small hole, 20... Cylindrical body, 20a...
...One end, 20b...Other end, 21...Slit, 22...Second spring pin, 23...Pin, 24...Head, 25...Protrusion.

Claims (1)

[Scope of utility model registration request] A cylindrical pin is fixed by friction with the cylindrical body inside the one end of a cylindrical body provided with a slit that is open at both ends and one end is open in the longitudinal direction. A first slider having a protrusion protruding from one end of the cylindrical body is movably provided, and a knob is secured to the first slider by the cylindrical pin and protrudes from the slit. a second slider having a movement prevention portion provided at the other end of the cylindrical body, and having a protrusion protruding from the other end of the cylindrical body inside near the other end of the cylindrical body. A first slider and a second slider inside the cylindrical body are provided movably.
An elastic body is provided between the slider and the slider, which constantly biases the first slider toward one end and simultaneously biases the second slider toward the other end. band spring bar.